org.socialsignin.spring.data.dynamodb.mapping.DynamoDBPersistentPropertyImpl.java Source code

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Here is the source code for org.socialsignin.spring.data.dynamodb.mapping.DynamoDBPersistentPropertyImpl.java

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/*
 * Copyright 2013 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.socialsignin.spring.data.dynamodb.mapping;

import java.beans.PropertyDescriptor;
import java.lang.annotation.Annotation;
import java.lang.reflect.Field;
import java.util.Collection;
import java.util.Collections;
import java.util.HashSet;
import java.util.Set;

import org.springframework.data.annotation.Id;
import org.springframework.data.annotation.Reference;
import org.springframework.data.annotation.Transient;
import org.springframework.data.mapping.Association;
import org.springframework.data.mapping.PersistentEntity;
import org.springframework.data.mapping.model.AnnotationBasedPersistentProperty;
import org.springframework.data.mapping.model.SimpleTypeHolder;

import com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBHashKey;
import com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBIgnore;
import com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBVersionAttribute;

/**
 * {@link DynamoDBPersistentProperty} implementation
 * 
 * @author Michael Lavelle
 */
class DynamoDBPersistentPropertyImpl extends AnnotationBasedPersistentProperty<DynamoDBPersistentProperty>
        implements DynamoDBPersistentProperty {

    private static final Collection<Class<? extends Annotation>> ASSOCIATION_ANNOTATIONS;
    private static final Collection<Class<? extends Annotation>> ID_ANNOTATIONS;

    static {

        Set<Class<? extends Annotation>> annotations = new HashSet<Class<? extends Annotation>>();

        annotations.add(Reference.class); // Reference not yet supported
        ASSOCIATION_ANNOTATIONS = Collections.unmodifiableSet(annotations);

        annotations = new HashSet<Class<? extends Annotation>>();
        annotations.add(Id.class);
        annotations.add(DynamoDBHashKey.class);
        ID_ANNOTATIONS = annotations;
    }

    /**
     * Creates a new {@link DynamoDBPersistentPropertyImpl}
     * 
     * @param field
     *            must not be {@literal null}.
     * @param propertyDescriptor
     *            can be {@literal null}.
     * @param owner
     *            must not be {@literal null}.
     * @param simpleTypeHolder
     *            must not be {@literal null}.
     */
    public DynamoDBPersistentPropertyImpl(Field field, PropertyDescriptor propertyDescriptor,
            PersistentEntity<?, DynamoDBPersistentProperty> owner, SimpleTypeHolder simpleTypeHolder) {

        super(field, propertyDescriptor, owner, simpleTypeHolder);
    }

    @Override
    public boolean isWritable() {
        return !isAnnotationPresent(DynamoDBIgnore.class);
    }

    public boolean isHashKeyProperty() {
        return isAnnotationPresent(DynamoDBHashKey.class);
    }

    public boolean isCompositeIdProperty() {
        return isAnnotationPresent(Id.class);
    }

    /*
     * (non-Javadoc)
     * 
     * @see
     * org.springframework.data.mapping.model.AnnotationBasedPersistentProperty
     * #isIdProperty()
     */
    @Override
    public boolean isIdProperty() {

        for (Class<? extends Annotation> annotation : ID_ANNOTATIONS) {
            if (isAnnotationPresent(annotation)) {
                return true;
            }
        }

        return false;
    }

    /*
     * (non-Javadoc)
     * 
     * @see
     * org.springframework.data.mapping.model.AbstractPersistentProperty#isEntity
     * ()
     */
    // @Override

    public boolean isEntity() {

        return isAnnotationPresent(Reference.class);// Reference not Yet
        // Supported
        // return propertyDescriptor != null
        // && propertyDescriptor.getPropertyType().isAnnotationPresent(
        // DynamoDBTable.class);

        // return false;

    }

    /*
     * (non-Javadoc)
     * 
     * @see
     * org.springframework.data.mapping.model.AnnotationBasedPersistentProperty
     * #isAssociation()
     */
    @Override
    public boolean isAssociation() {

        for (Class<? extends Annotation> annotationType : ASSOCIATION_ANNOTATIONS) {
            if (findAnnotation(annotationType) != null) {
                // No query lookup yet supported ( see
                // Repositories.getPersistentEntity(..) )
                // return !information.isCollectionLike();
                return true;
            }
        }

        return false;
    }

    /*
     * (non-Javadoc)
     * 
     * @see
     * org.springframework.data.mapping.model.AnnotationBasedPersistentProperty
     * #isTransient()
     */
    @Override
    public boolean isTransient() {
        return isAnnotationPresent(Transient.class) || super.isTransient()
                || isAnnotationPresent(DynamoDBIgnore.class);
    }

    @Override
    public boolean isVersionProperty() {
        return super.isVersionProperty() || isAnnotationPresent(DynamoDBVersionAttribute.class);
    }

    /*
     * (non-Javadoc)
     * 
     * @see org.springframework.data.mapping.model.AbstractPersistentProperty#
     * createAssociation()
     */
    @Override
    protected Association<DynamoDBPersistentProperty> createAssociation() {
        return new Association<DynamoDBPersistentProperty>(this, null);
    }
}